How to Add, Change, and Reprogram a Mazda 3 Spare Key

If you've dropped your key fob on the floor or it stopped working, it's always a good idea to have an extra key available. This article will provide everything you should learn about changing, adding, and changing the programming of your Mazda 3 key fobs.

A word of caution: some keys require programming by a locksmith professional or dealer, whereas others do not. Only use official Mazda replacements to replace your key fob.

How to Add a Spare Key

If you're unable to receive a spare key from the dealership when you purchase your Mazda 3 or accidentally break your current key do not fret -- there is still the option of adding another key. You'll need to use an flat-head screwdriver and the CR2025 replacement battery. Once you've got these items you need, it's time to open the key fob. Locate the auxiliary key release. It's located underneath the metal portion and is easy to find. Once you press the button, the back cover will fall off instantly. Then, place the screwdriver head into the notch on top or in the space, and pull the metal piece off.

After the auxiliary key has been removed, insert the new or spare key into the slot. Set the ignition to ON and wait for around five seconds before turning it to off. This will allow the system to recognize the new key and start your vehicle in the future.

It is important to remember that you can only program up to three keys for your Mazda 3. You don't want to have to utilize more than two key fobs in order to start your vehicle. This is a safety measure to stop unauthorised users from activating your key fobs and starting your car.

How to Reprogram a spare key

It's a smart idea to know how to reprogram a spare key in the event that the original key is lost or stolen. This will keep unauthorised persons from starting your car or stealing it. This process is compatible with any 2010 mazda 3 key but you'll need two working keys to start the reprogramming. If you don't have two keys that function, it's best to take your vehicle to a dealer to get this completed.

Start by getting into the driver's position, and shutting all doors, with the exception of the one that is open. Turn the ignition on and insert the first working key. For five seconds, take the key out and repeat the process with the second working key.

Once you've programmed your new key, you'll have three working keys mazda you can use to start your vehicle in the future. Check each key to make sure that they're operating correctly before taking them off.

It's a good idea to purchase an extra Mazda 3 key fob, especially if your car is one who often loses your key or has other issues with it. It's possible to find one on the internet or at your local auto store, but make sure to read the reviews before buying so that you can avoid getting a key fob that's not compatible with your vehicle.

How do you change the battery on a spare key?

It's awful to discover that your key fob has died, and you are in a position to not unlock your vehicle. It's easy to change the battery yourself and save money at the dealer.

Press the auxiliary key button on the back of the keyfob. This will release the metal key auxiliary and reveal an opening on both sides of the case. Place the flathead in one of these slots, and then gently pry the two halves apart. When the battery is completely exposed, take it out and put it away somewhere that you won't forget about it.

Before you begin, be sure you have a new replacement car key mazda 3 battery. They can be found in any store that sells batteries or at a Mazda dealer near Winter Garden. The right type of battery is essential to ensure that your key fob functions properly.

Replace the cap on the battery and then put in the new battery. Be careful not to damage the small rubber ring the battery rests on. Press the two halves together until you can hear the click.

How to reset a Keyless Entry System

The key fob inside your Mazda 3 is not only an option for convenience, it's an important security feature. The car won't start if your key is stolen or lost even if you have a spare key fob. The key fob has to be reset by the dealer to allow it to work again. It can be a stressful and costly process. Therefore, it's best to understand how you can reset the system.

To reset the system, remove the battery for 15 minutes. This will eliminate any remaining electricity from the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Verify the continuity between the next terminals.

Put the key in the slot, and switch the ignition on. Put the key in for around five seconds, and then turn it off. The key information is now added to the computer in your car and the new fob will start your car. You can program any number of fobs you desire but only one can be used at any particular time. This will keep unauthorised individuals from stealing your key and gaining access to your vehicle. You can purchase a new mazda key fob key fob online, but you'll still need to go to an authorized locksmith or dealer to have it cut and programmed.